points_in_circle: Points in circle

In spatialrisk: Calculating Spatial Risk

Description

Find all observations in a data.frame within a circle of a certain radius.

Usage

points_in_circle(
  data,
  lon_center,
  lat_center,
  lon = lon,
  lat = lat,
  radius = 200
)

Arguments

data	data.frame with at least columns for longitude and latitude.
lon_center	numeric value referencing to the longitude of the center of the circle
lat_center	numeric value referencing to the latitude of the center of the circle
lon	column name in data with longitudes (lon is default).
lat	column name in data with latitudes (lat is default).
radius	radius (in meters) (defaults to 200m).

Value

data.frame. Column distance_m gives the distance to the center of the circle (in meters).

Author(s)

Martin Haringa

Examples

points_in_circle(Groningen, lon_center = 6.571561, lat_center = 53.21326, radius = 60)

spatialrisk documentation built on Nov. 10, 2021, 5:09 p.m.